kern/svc: implement IoPool/Region svc support

libraries/libmesosphere/include/mesosphere/kern_k_io_pool.hpp

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <mesosphere/kern_common.hpp>
+#include <mesosphere/kern_k_auto_object.hpp>
+#include <mesosphere/kern_slab_helpers.hpp>
+#include <mesosphere/kern_k_io_region.hpp>
+
+namespace ams::kern {
+
+    class KIoPool final : public KAutoObjectWithSlabHeapAndContainer<KIoPool, KAutoObjectWithList> {
+        MESOSPHERE_AUTOOBJECT_TRAITS(KIoPool, KAutoObject);
+        private:
+            using IoRegionList = util::IntrusiveListMemberTraits<&KIoRegion::m_pool_list_node>::ListType;
+        private:
+            KLightLock m_lock;
+            IoRegionList m_io_region_list;
+            ams::svc::IoPoolType m_pool_type;
+            bool m_is_initialized;
+        public:
+            static bool IsValidIoPoolType(ams::svc::IoPoolType pool_type);
+        public:
+            explicit KIoPool() : m_lock(), m_io_region_list(), m_is_initialized(false) {
+                /* ... */
+            }
+
+            Result Initialize(ams::svc::IoPoolType pool_type);
+            virtual void Finalize() override;
+
+            virtual bool IsInitialized() const override { return m_is_initialized; }
+            static void PostDestroy(uintptr_t arg) { MESOSPHERE_UNUSED(arg); /* ... */ }
+
+            Result AddIoRegion(KIoRegion *region);
+            void RemoveIoRegion(KIoRegion *region);
+    };
+
+}